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The article presents the results of research aimed at increasing productive traits in fine-fleeced sheep breeding through the use of interbreeding. The aim of the work was to establish the effectiveness of using ram charolais sheep in crossing with ewe of the ascanian fine-fleeced breed of the Tauride type to improve the level of meat productivity and quality of lamb.

In the course of the research, a comparative analysis of the growth and development of young animals was carried out based on the determination of live weight, growth coefficients, absolute and average daily increments in purebred and local peers of different gender and age groups.

It was found that local young animals (F₁) outnumbered purebred peers by live weight by 18.8-40.3% at weaning and 16.9–17.6% at 12 months of age. and it was characterized by higher growth rates and uniform development of the musculoskeletal system.

Local young animals (F₁) are characterized by higher growth rates at weaning by 6.98-8.8%, at 12 months the difference is 4.2-7.6%. according to the average daily growth rates, there is a difference in the range of 20.8 -21.8% at weaning, followed by a decrease to the age of one year, depending on gender..

The intensity of growth and development of young animals can be determined by appropriate indices. Indices of formation intensity, stress and growth uniformity are higher in local young animals

The manifestation of the heterosis effect led to an increase in assimilative activity, which contributed to a more intense accumulation of muscle tissue and the formation of more pronounced meat forms. Balanced feeding and optimal conditions of keeping ensured the realization of the genetic potential of growth and development of crossbreeds, as indicated by the results obtained.

It is proved that the use of ram charole sheep on ascanian fine-fleeced ewe is an effective biotechnological technique that allows obtaining highly productive young meat and wool without compromising the quality of wool raw materials.

The research results confirm the feasibility of introducing systematic interbreeding in the conditions of the Dnieper region to increase the profitability of production and competitiveness of the sheep breeding industry in Ukraine.

 

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